eSIM explained
What is an eSIM?
An eSIM — short for embedded SIM — is a digital SIM card built into your phone. Instead of buying a plastic card at the airport, you download a data plan onto your device and get online the moment you land.
Built into your phone
No plastic card, no tray, nothing to lose. The SIM is a chip already soldered into modern phones — a plan is simply written onto it.
Delivered in seconds
After buying, you receive a QR code by email. Scan it over Wi-Fi and the travel plan is added alongside your normal line.
Local rates abroad
Your eSIM connects to local partner networks at 4G/5G speeds, so you pay a fixed price instead of roaming charges.
Your number stays yours
Calls, SMS and WhatsApp keep working on your usual number. The eSIM only carries mobile data.
How does an eSIM work?
A traditional SIM stores your subscriber profile on a removable chip. An eSIM stores the same profile in software on a chip that is already inside your phone. When you scan a QR code, the profile is downloaded and appears as a second line in your phone's settings — you choose which line handles data and which handles calls.
Which phones support eSIM?
Most phones released since 2018: iPhone XS and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer, plus many recent Motorola, OPPO and Huawei models. Dial *#06# — if an EID number appears, your phone is eSIM ready. The phone also has to be carrier-unlocked.
How do I install and activate one?
- Buy a plan for your destination and check your email for the QR code.
- While on Wi-Fi, open your phone settings and add the eSIM by scanning the code.
- Leave the eSIM switched off until you land, then turn it on.
- Enable data roaming for the Holalio line so it can join local networks.
Validity starts when the eSIM first connects at your destination, not when you buy it.
Why use an eSIM instead of roaming?
Roaming is billed by your home carrier and often costs several times the local rate. With a travel eSIM you know the price before you leave, there is nothing to collect at the airport, and you can add data at any time if you run out.